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Chapter 10: Q.120 (page 608)

A golf instructor is interested in determining if her new technique for improving players' golf scores is effective. She takes four new students. She records their 18 -hole scores before learning the technique and then after having taken her class. She conducts a hypothesis test. The data are as follows.

The correct decision is

a. RejectH0

b. Do not rejectH0

Short Answer

Expert verified

The correct decision is (b).

Do not rejectH0

Step by step solution

01

Given Information 

The given data is

We have to determine the correct decision .

02

Explanation 

Let's check the differences from the table: 3,-2,7,1

We're putting these theories to the test.

渭D=0,渭D>0

The differences' mean and standard deviations are:

渭=2.25,s=3.774917

Computing the test statistic's value:

t=X炉sn=2.253.7749174=1.1921

The p-value is 0.15946, according to the applet.

We can conclude that we cannot reject hypothesis H0because the p-value is greater than any standard significance level (b).

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